Eevee screenspace reflections disabling AO #65758

New Issue

Kent Trammell · 2019-06-12T16:25:33+02:00

Kent Trammell commented

2019-06-12 16:25:33 +02:00

System Information
Operating system: Linux Deepin 15, Kernel 4.15.0
Graphics card: GeForce RTX 2080

Blender Version
Broken: version: 2.80, branch: blender2.7, commit date: 2019-06-11 21:45, hash: d93a7290e5
Worked: (optional)

Short description of error
Ambient occlusion seems to be disabled by enabling screen-space reflections. With screen space reflections disabled, the AO shader node works as expected. With screenspace reflections enabled, the AO shader node outputs white only:
SS-reflect_disabling_AO.mkv

Exact steps for others to reproduce the error
Open the attached .blend file and toggle Screen Space Reflections on and off to see the AO of the eye geometry turn on and off inversely.
eevee_SS-reflect_bug.blend

**System Information** Operating system: Linux Deepin 15, Kernel 4.15.0 Graphics card: GeForce RTX 2080 **Blender Version** Broken: version: 2.80, branch: blender2.7, commit date: 2019-06-11 21:45, hash: d93a7290e506 Worked: (optional) **Short description of error** Ambient occlusion seems to be disabled by enabling screen-space reflections. With screen space reflections disabled, the AO shader node works as expected. With screenspace reflections enabled, the AO shader node outputs white only: [SS-reflect_disabling_AO.mkv](https://archive.blender.org/developer/F7100302/SS-reflect_disabling_AO.mkv) **Exact steps for others to reproduce the error** Open the attached .blend file and toggle Screen Space Reflections on and off to see the AO of the eye geometry turn on and off inversely. [eevee_SS-reflect_bug.blend](https://archive.blender.org/developer/F7100310/eevee_SS-reflect_bug.blend)

Kent Trammell commented

2019-06-12 16:25:33 +02:00

Added subscriber: @theluthier

Sebastian Parborg commented

2019-06-17 16:22:05 +02:00

Added subscribers: @fclem, @ZedDB

Clément Foucault was assigned by Sebastian Parborg

2019-06-17 16:22:05 +02:00

Sebastian Parborg commented

2019-06-17 16:22:05 +02:00

The issue here is not the SSS, but the Refraction. You can either toggle the refraction off in the SSS settings or in the material and it works as expected.

@fclem https://docs.blender.org/manual/de/dev/render/eevee/limitations.html doesn't mention anything about the AO and refraction interaction we see here directly, so it this a bug or a limitation?

The issue here is not the SSS, but the Refraction. You can either toggle the refraction off in the SSS settings or in the material and it works as expected. @fclem https://docs.blender.org/manual/de/dev/render/eevee/limitations.html doesn't mention anything about the AO and refraction interaction we see here directly, so it this a bug or a limitation?

Clément Foucault commented

2019-06-17 18:05:17 +02:00

Changed status from 'Open' to: 'Archived'

Clément Foucault closed this issue

2019-06-17 18:05:17 +02:00

Clément Foucault commented

2019-06-17 18:05:17 +02:00

This is a limitation, It was just undocumented. Thanks!

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Eevee screenspace reflections disabling AO #65758